How to set a condition that a list view is empty for validation putposes

Good day jaswerl

The logical procedure of rules I will explain below :

.

1) You will first perform a getList method on the smart object that populates the listView.
2) On the output mappings, you will populate a hidden textbox with any value. This entails that is the getList will populate a textbox if any value in the smart object is found.
3) Test if the textbox contains a value
4) If it does Perform a getList to populate the SmartObject to populate the listview. After this clear the value of the textbox which will reset it for the next event and not keep it populated resulting in not showing the message on an empty list.
5) If the text Textbox is empty(else) Show a message that there are no items to display.

The screenshot start event is on the button but this makes no difference in contrast with your start event.

See the attached screenshot for the rules.

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Thank you.

Kind regards
Jacques